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Durability testing of silvered-glass mirrors

Sutter, Florian and Fernandez-Garcia, Aranzazu and Heller, Peter and Anderson, K. and Wilson, G. and Schmücker, Martin and Marvig, P. (2015) Durability testing of silvered-glass mirrors. Energy Procedia (69), pp. 1568-1577. Elsevier. DOI: 10.1016/j.egypro.2015.03.110 ISSN 1876-6102

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Abstract

Durability analysis of solar mirrors is attracting attention from Concentrating Solar Power (CSP) developers because guaranties of a suitable optical behavior during the whole service life time are required. To give realistic life time estimations in affordable time, research institutes are investing a lot of effort in developing appropriate accelerated aging tests. In this paper, an extensive test campaign of accelerated aging tests has been performed with silvered-glass mirrors from several manufacturers. Three commercial outdoor-proven products, a not outdoor-proven mirror prototype and two mirrors which showed degradation after only three years of outdoor operation in Spain and Australia have been tested. The accelerated aging tests were conducted for an extended period of time in order to determine the testing time at which the two mirror materials that showed degradation outdoors start to fail under the accelerated conditions. The degradation of the outdoor exposed mirrors is analyzed microscopically and compared to the degradation appearing under accelerated aging. The presented data on accelerated testing represents useful information for standardization of durability testing of solar mirrors.

Item URL in elib:https://elib.dlr.de/96910/
Document Type:Article
Title:Durability testing of silvered-glass mirrors
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Sutter, FlorianFlorian.Sutter (at) dlr.deUNSPECIFIED
Fernandez-Garcia, Aranzazuarantxa.fernandez (at) psa.esUNSPECIFIED
Heller, Peterpeter.heller (at) dlr.deUNSPECIFIED
Anderson, K.CSIROUNSPECIFIED
Wilson, G.CSIROUNSPECIFIED
Schmücker, MartinMartin.Schmuecker (at) dlr.deUNSPECIFIED
Marvig, P.CSIROUNSPECIFIED
Date:May 2015
Journal or Publication Title:Energy Procedia
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI :10.1016/j.egypro.2015.03.110
Page Range:pp. 1568-1577
Publisher:Elsevier
ISSN:1876-6102
Status:Published
Keywords:solar mirrors, durability testing, accelerated aging, standardization, corrosion
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Systems (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Qualification (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Qualifizierung
Deposited By: Kruschinski, Anja
Deposited On:30 Jun 2015 13:07
Last Modified:06 Sep 2019 15:22

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